Acid reflux water in the stomach at night can be relieved quickly by taking oral mucosal protectors that neutralize stomach acid such as magnesium aluminum carbonate, and then treated accordingly depending on the cause. According to the cause of gastritis and gastroesophageal reflux, medication can be given. 1. Gastritis: Inflammatory lesions of the gastric mucosa can be caused by stress, infection, medication and other factors, so that gastric reflux and nausea occur at night, which can be treated with drugs such as omeprazole and bismuth potassium citrate. 2. Gastroesophageal reflux: Gastroesophageal reflux refers to the relaxation of the lower esophageal sphincter, which leads to the reflux of gastric contents from the stomach into the esophagus, resulting in heartburn, belching and other symptoms, and also acid reflux at night. You can pay attention to not lying down immediately after eating and drinking, and the more serious symptoms can be treated with oral mosapride, rabeprazole and other drugs. In addition to gastroesophageal reflux and gastritis, the causes of acid reflux at night also include peptic ulcer, pyloric obstruction or incomplete obstruction caused by various reasons. If the above symptoms occur, it is recommended to go to the hospital in a timely manner to improve the gastroscopy and other tests, a clear diagnosis, and targeted treatment to avoid delaying the condition.